Gearing.



W B. LANE.

GEARING.

APPLICATION FILED MAR. 1. I914.

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W B. LANE.

GEARING.

APPLICATION FILED MAR. 7, I914.

Patented Apr. 6,. 1915..

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GEARING APPLICATION FILED MAR. 7. I914.

Patented Apr. 6,1915.

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YHE NORRIS PETERS 60.. PHOTOiITHQ, WASHINGTON. D. C.

of Illinois,

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snow cons'rnucrrcii COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION ILLINOIS.

Guanine.

Application filed March 7, 1914. Y Serial No. 823,198.

use of a vertically traveling bucket, usually counterweighted, or a pair of buckets operatively connected together and moving simultaneously in opposite directions, for receiving charges of material from a hopper when in their lowermost position and raising the charges thus received to the point of discharge, usually into a bin elevated above the hopper, the hoisting mechanism involving a drum, through the medium of which the bucket-cable, or cables, are operated, which is automatically stopped when the buckets move into charge-receiving and charge-dumping positions, and in some cases cooperating with means operating automatically to re-start the bucket-cable-operating drum in the opposite direction for reversing the movement of the bucket, or buckets, after the proper time limit for filling or dumping the, buckets, as the case may be, has elapsed.

My object is to provide a novel, simple and positively operating construction of hoist which will perform the automatic operations hereinbefore referred to, and one in which the various parts will operate in properly timed relation to each other for insuring the stopping of the buckets at the desired points of filling and discharging.

- Referring to the accompanying drawings Figure lis a view in side elevation of hoisting mechanism constructed in accordance with my invention. Fig. 2 is a plan section taken at the line 2 on Fig. l and viewed in the direction of the arrow. Fig. 3 is a vertical section taken at the line 3 on Fig. 2 and viewed in the direction of the arrow; and Fig. 4, a view in elevation of fluidoperated piston and cylinder mechanism cooperating with the clutch of the hoist, certain of the parts being shown in section.

The frame of the hoist is represented at 5 and carries a shaft 6, equipped with a gear 7, rigid thereon, and carrying a drum 7 Specification of Letters Patent.

fixed on a g the shaft 12 also carrying a plnion 13-. The

- therefrom,

ing, engagement Patented Ap which, in practice, is usually releasablyt-S'Q- cured on the shaft 6, but which, so far. as the present improvements. are concerned, may be treated as fixed on this shaft. The bucket operating cable, or cables,

shown), as the case may be, are wound upon the drum 7* so that, assumingone bucket with an oppositely-operating counterweight is employed, or two oppositely-operatin'gv buckets are used, the cable would be -so wound upon the drum, in accordance jw'ith common practice, that the drum, in rotating in one direction in the case of the counterweighted bucket, would raise the bucket and lower the counterweight, and in the 19 case. of the oppositely-moving buckets would raise one bucket and lower the. othen; and in rotating in theopposite direction, lin

' the case of .the counterweighted bucket, would lower the bucket and raise the coun- 7 5 terweight, and in the case of the oppositelymoving buckets would operate them re; versely to that abovedescribed,the bucket, or buckets, operating when in lowermost when raised to'up'permost, position discharging into a bin or the like. 5 I, p

The power is applied to the.hoistfor op erating the drum 7-, through a drive-shaft 8, carrying pinions 9 and 10 journaled thereon, the pinion 9 meshing with a pinion ll shaft 12 journaled in the frame 1 position to receive a charge of material, and &9

pinions 10 and 13 mesh with a gear 1 L on 1a 15 carrying a pinion 16.meshingwithithe gear 7. The shaft 8 carries a clutchdevice formed ofa sleeve 17 connected therewith, to rotate with this shaft, by a key 18 on the shaft extending into a in the sleeve 17 to permitthe latter tobe slid along the shaft 8. without disengaging the sleeve 17 being providedat opposite ends with frictiondisks 19 and 20' adapted to be moved into frictional, clutch,- with friction disks 21 andf rigid with sleeves 23 andgfl 9 and 10, respectively,iby .17 longitudinally of the 22, respectively, on the pinions sliding the sleeve shaft 8, the friction-disks being so arranged L shaft 15 journaled in the frame 5, the shaft 30 key-way (not shown) that one only of the disks 21 and 22 will be clutched to the shaft 8, at a time, it being understood from the foregoing that when the pinion 9 is clutched to the shaft-8 the drum 7 a will be rotated in one direction, and

when the pinion 10 is clutched to this shaft the drum will be rotated in the opposite di rection.

The drum 7 is operatively connected with mechanism for controlling the shifting of the clutch-sleeve 17 to throw the disks l9 and 20 thereon to neutral position in which both will be out of engagement with their cotiperating disks 21 and 22, and thus the drum-driving gears will be disengaged from the shaft 8, thus disconnecting the drum 7 from the drive-shaft 8, a description of this mechanism being as follows: Journaled in the frame 5' is a shaft 25 having collars 26, 27, 28 and 29 rigidly secured thereon in spaced relation. Journaled on the shaft 25, between the collars 28 and 29, is a sprocket 30 adapted to be driven from the drum 7 through the medium of a sprocket-chain 31, engaging the sprocket 30 and a sprocket 30 fixed on the drum 7 the sprocket 30 being rigidly connected with a frame 32 ournaled at its opposite ends on the shaft 25 between the collars 26 and 27, and the collars 28 and 29, respectively, this frame engaging at its opposite sides with the arm-extensions 33 of a nut 34% engaging a threaded portion 35 of the shaft .25, this nut being provided with oppositely-extending shoulders 36 and 37 adapted to engage with shoulders 38 and 39, respectively, on the collars 28 and 27, respectively, and thereby rock the shaft 25 in one or the other direction, depending on which shoulders engage, as is the common practice in hoists of this character, and as will be hereinafter described. The shaft 25 carries a cam/l0 rigid thereon adapted to alternately engage with rollers il and 4-2 extend ing laterally from the side of a link 43, through an elongated slot 4:4 in which the shaft 25 extends. The link a3 is pivotally connected with a pin 45 provided in a crankarm l6 secured on a shaft 47 journaled in the frame 5 of the machine, the other end of this pin having journal connection with one end of a rod 48, as indicated at 49, the other end of this rod beingpivotally connected, as indicated at 50, with the arm 51 of a bellcrank lever 52 pivoted, as indicated at 53, on a sleeve 5% loosely mounted on the shaft 12,and confined thereon by collars 55 fixed on this shaft, the other end 56, of the bellcrank lever 52, being in the form of a yoke and engaging'at elongated slots 57, in its opposed ar'ms, pins 58 on a ring 59 loosely mounted on the sleeve 17 between collarsections 60 on the latter, whereby, upon rocking the bell-crank lever 52, the sleeve 17 will be shifted along the shaft 8, in a direction depending on the direction in which this lever is actuated.

A. description of the operation of the mechanism, in so far as it has been described, is as follows: Assuming the parts to be in the position illustrated in Fig. 2,

the drive-shaft 8 is clutched to the pinion 9, which latter, through the medium of the pinions 11 and 13, and the gears 1-1- and 7, rotates the drum 7* in the direction of the arrow in Fig. 1 for raising or lowering the bucket where one is employed, and raising one and lowering the other bucket when a pairis used, the frame 32, by reason of the sprocket-chain connection thereof with the drum 7*, rotating in a clockwise direction in Fig. 1, and producing a corresponding rotation of the nut 3%, forming a dog, on the threaded portion 35 of the shaft 25, the nut 34 being shown in the position it assumes relative to the shoulders 38 and 39, when the bucket, or buckets, have completed about one-half of their up or down movement, as the case may be. As the bucket, or buckets, in the continued rotation of the drum 7 in a clockwise direction in Fig. 1, near the end of their up or down movement, as the case may be, the shoulder 36 engages the shoul der 38 on the collar 28 and turns the shaft 25 in a clock-wise direction in Fig. 1, thus forcing the cam 40 against the roller fl and shifting the link 43 to the right in Fig. 3, and consequently the rod 18, in the same direction, which moves the clutch-sleeve 17 to a position in which the clutel'i-disks 19 and 20 are both out of engagement with their coiiperating disks 21 and 22, or, in other words, to neutral position, which thus disengages the drum 7 from the continuously moving drive-shaft 8 whereupon the drum comes to rest, the cam 40, in this operation, rotating through approximately 180 from the position illustrated in Fig. 3. The drum 7 remains di engaged from the drive shaft 8, as stated, sufiiciently long to permit the bucket, where one bucket is used, to fill, or dump, as the case may be, and to pesnit one of the buckets to dump and the other to fill at opposite ends of their paths of movement, where two buckets are employed. The drum 7 is re-started, but in the opposite direction, by moving the clutch-disk 20 into frictional clutching-engagement with the disk 22, which is accomplished in the construction illustrated,

under the normal operation'of the apparatus, in an automatic manner, by rotating the shaft 47 in a clock-wise direction in Fig. 3 sufliciently far to move the clutch-disk 20 into engagemenut with the disk 22; but which operation may be accomplished by hand, if desired, in a manner hereinafter described.

v The preferred form of means for automatically throwing the drive-shaft-engaging clutch from neutral to clutched engagement with said shaft is that illustrated, the fol owing being a description of the same: Secured to the frame 5 of the machine, and preferably in a horizontal position. is a cylinder 62 containing a piston 63. The outer end' of the rod 64 of the piston 63 is provided with means adapted to coijperate with a laterally-extending pin 65 fixed on a 7 its coiiperating disk'21 or 22, depending on the direction of rotation of the shaft '47. The means provided on the piston-rod 64, for this purpose, comprises a bar 67 pivoted between. its ends on a pin 68 extending lat erally from the piston-rod 64, this bar having its underside recessed, as indicated at 69, to provide shoulders 70 and 71, beyond which shoulders the bottom surface of the bar 67 is preferably straight, as represented at 72 and 73,the point at which the bar 67 is pivotally connected with the pistonrod 64 being preferably in substantially the same horizontal plane as that occupied by thepin The piston 63, in the operation of the machine, is forced in one direction in the cylinder 62 for engaging one of the shoulders or 71 with the pin 65 for rocking the shaft 47 in one direction, after'the drum 7 a has been allowed'to remain idle for the desired length of time, during which time the bucket, controlled by the hoist, has been filled, or emptie'chin the case of a single bucket -.construction, and one of the buckets has been filled, or emptied, in the case of aatwobucl:etconstruction, the piston in this movement operating to throw the clutch 17 to such position that it will rotate the drum in the direction opposite to that in which it was rotated before being arrested. The piston 63 is adapted to be moved in the opposite direction for engaging the other of the shoulders 70 or 71 with the pin 65 for rocking the shaft 47 in the opposite direction to that above stated,

after the drum has been allowed to remain idle for a length of time suflicient to permit the bucket, or buckets, to be 'filled, or dumped, as the case may be, thus causing the drum to be re-started, but in the opposite direction. i v

The piston 63 is operated, for the purpose above'stated, by means of fluid-pressure, preferably oil, introduced intothe opposite ends of the cylinder 62 alternately. One end of thecylinder is connected with a pipe 74 opening through a port 75 into the interior of a valve-casing 76, the other end of the cylinder being connected with a pipe 77 which opens through a port 78 in the casing 76 and diametrically opposing the port '75. 'Opening into the cylinder 62 is a pipe 79 so positioned that it will be in communication with one end of the cylinder when the piston 63 is atthe end of its stroke in one direction, and in communication with the other end of the cylinder when the piston is at the end of its stroke intheopposite direction, the pipe 79 openingiinto a pipe 80 which opens at one end through a port 81 into the casing 76, and at its-opposite end communicates with the interior of check-valve 83 controlling communication between the pipe 80 and cylinder 82'. The pump-cylinder 82 is connected with one'end' I 7 5 p of a pipe 84 whichopens at its opposite end through a port 85 into the interior of the valve-casing 76, the ports 81 and 85being diametrically opposed and arranged preferably at an angle of about -to the adjacent ports 75 and 78. The pipe 84, which is the pump-discharge pipe, is provided at the cylinder 82 with an outwardly-opening check-valve 86. Coiiperating with the cylinder 82 is a piston 87, the rod- 88 of which is pivotally connected, as indicated at 89,

with the depending lug 90 of an eccentric. 91 journaled on the drive-shaft .8, the piston 87, in its reciprocation's, operating to draw oil from the pipe 80 into the cylinder 82 and discharge it therefrom through the pipe 84 -%70 a pump cylinder 82, an inwardly opening into the valve-casing 76 from which it discharges through the pipes 74 and 77 alternately, under the control of an oscillating valve 92 journaled in the casing 76, this valve being provided with two ports 93 and 94 for controlling the flow of oil to and from the cylinder 62, ashereinafter described, the stem 95 of this valve being. provided with a slotted laterally-extending member 96 intowhich slot the pin 97 on a laterally-extend ing arm 98, rigid. on the shaft 25, extends and through the medium of which connection, the valve 92 is automatically operated, as hereinafter described. j

Assuming that the hoist is in the position illustrated in Figs. 1,2 and 3, in which position of the parts the drum 7? is rotating in clock-wise direction 'in Fig." 1, and the bucket, or buckets, occupy a position in their travel substantiallyhalf way between the limits of their movements, as hereinbefore described, the'positions occupied by the piston and cylindermechanism, with its clutch-actuating means, and the valve for controlling the flow of oil pumped bythe piston 87, into and from the cylinder 62, will be those illustrated in Fig. 4, wherein the valve-port 93 registers with the ports 78 and 85, and the valve-port 94 registers with the ports 75 and 81. poses, at its fiat surface 73, the pin 65, this bar being tilted upwardly at its forward end, as illustrated in Fig. 4, having been moved to this position by the engagement of the curved upper surface at the rear end of this bar, with a pin 99 on the frame of the machine with which pin, the bar 67 is engaged in the movement of the piston, to the left in Fig. 4,'to; the position therein shown. In this position'of the piston and The bar 67 'opcylinder-mechanism and the valve 92, the oil pumped by the piston 87 passes through the pipe 8 1, valve-casing 76, pipe 77 into the right-hand end of the cylinder 62, in Fig. 1, thence through the pipe 79 to the pipe 80, from which latter it is sucked into the Cylinder 82 on the suction stroke of the piston 87, the piston on its suction stroke drawing oil from the tank 7 9 The oil con tinues to flow through the valve-casing 76, cylinder 62 and the pipes 79 and 80, as stated, until the dog 34-, at its shouldered portion 36, engages the shoulder 38 on the shaft 25 and rotates the latter to the right in Fig. 3 through about 180, the valve 92, in this operation of the shaft 25, rotating in a counter-clockwise direction in Fig. 4 to a position in which the port 94 will register with the casing-ports 75 and S5 and the port 93 will register with the casing-ports 7 8 and 81, whereupon the oil, pumped into the pipe 8 1, will flow through the casing 76 into the pipe 7-1 and into the left-hand end of the cylinder 62 in Fig. 4-, forcing the piston 63 to the right in this figure, the pump 82 thereupon receiving its supply of oil from the right-hand end of the cylinder 62 in Fig. 4, the oil, thus supplied to the cylinder 32, passing from the cylinder 62 into the pipe 77, thence to the pipe 80 and into the cylinder 82. The piston 63, in moving to the right in Fig. 1, moves the bar 67 into engagement at its shoulder with the pin 65, (it being understood that, in the construction illustrated, the arm 66 and pin 65 will extend in this operation of the piston, in the position to which they are moved by the engagement of the cam 10 with the roller 11 in the movement of the shaft 25 in a clockwise direction in Fig. 3 upon the rotation of the nut 84b while its shoulder 36 is in engagement with the shoulder 38, or, in other words, while the drum 7 is idle.

During the movement of the piston 63 to the right in Fig. 4:, the forward end of the bar 67 rides at its upper curved surface against a pin 100 on the frame 5, which lifts the rear end of the bar 67, and disengages he shoulder 7 0 from the pin 65 after the bar 67 has turned the shaft 4-7 in a clockwise direction in Fig. 4e, sufficiently far to move the disk 20 into frictional clamping engagement with the disk 22 for driving the drum 7 a through the medium of the pinion 10, thus reversing the rotation of the drum, the bar 67, in its final movement to the right in 1, passing at its shoulder 70 beyond the pin 65. .Vhen the rotation of the drum is thus reversed, the nut 34 is driven along the thread 35 toward the shoulder 39., and the clutch-actuating piston and cylinder mechanism described, and the valve controlling the same, remain in the positions to which they were operated, as just described, until the nut, at its shoulder 37, engages the shoulder 39 on the shaft 25. During the movement of the nut 34 toward the shoulder 39, the piston 63 will remain in the righthand end of the cylinder 62 in Fig. 4, the oil pumped by the pump-piston 87 passing through the pipe 84, valve-casing 76, the lefthand end of the cylinder 62, in Fig. 4, and thence through the pipe 79 and into the pipe 80 from which the oil discharges into the cylinder 82, this forming an endless conduit through which the oil passes without further operating the piston 63. As soon, however, as the shoulder 37 on the nut engages the shoulder 39 on the shaft 25, and rotates the latter in an anti-clockwise direction Fig. 3, (in which movement the cam 10 will be forced against the roller 42, and thereby shift the link 43 to the left in Fig. 3 for causing the clutch 17 to occupy neutral position,) the valve 92 will be oscillated back to the position illustrated in Fig. a for cau ing the oil, pumped by the piston 87, to enter the right-hand end of the cylinder 62 in Fig. 4, and force the piston 63 and the parts connected therewith to the left in Fig. 4, the bar 67, in the latter part of its movement to the left in Fig. 1, engaging at its shoulder 71 with the pin 65 for shifting the clutch-device 17, from neutral position, into engagement at its disk 19 with the disk 21 for rotating the drum 7 in clockwise direction in Fig. 1, the bar 67 during its final movement to the left in Fig. 4, to the position therein illustrated, riding'at its curved rear end sur face under the pin 99 which disengages the bar 67 at its shoulder 71 from the pin 65.

The storage tank 79 in addition to serving the hereinbefore described purpose in the preferred embodiment illustrated, serves to compensate for leakage in the system.

It will be understood from the foregoing that the connection between the piston 64 and the crank 66 is in the nature of a lostmotion device, whereby the clutch, controlling the actuation of the drum 7 a from the drive-shaft 8, is caused to remain in neutral position, when moved thereto by the mechanism on the shaft 25, for a predetermined length of time, during which the filling, or emptying, of the bucket, or buckets, as the case may be, is being performed.

It is desirable that means be provided for enabling the operator to throw the clutch 17 into and out of operative position by hand, and to this end I journal on the shaft 25 a hand-lever 61, which has a depending extension 61 to which a link 61 is pivotally connected at 61, the opposite end of this link being pivotally connected with a pin 61 on the crank 66. As the parts carried by the piston move out of interlocking engagement with the pin 65 on the arm 66, it will be readily understood that the shaft 25 may be operated by hand, through the medium of the lever 61 without afiecting the position of the piston 63 and the parts carried thereby. Furthermore, by driving the clutch-controlling mechanism, from the rotary member on which the bucket-cable,.or cables, are wound, 1 danger of thisclutch-controlling mechanism have described it in connection with a hoist.

involving a bucket, or buckets, I do not wish to be understood as intending to limit it to the specific construction illustrated, nor to its .use for operating a bucket, or buckets, as it may be variously modified and altered, and used in situations other than those stated, without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is- 1. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-member, means for driving said rotary member in opposite directions from said drive-member, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive member, means operating automatically to move said second-named means to neutral position, and fiuid-pressure-operated means operating automatically after said secondnamed means occupy neutral position a predetermined length of time, to move the latter to a position in which said rotary memher will be operated in a direction opposite to that in which it was rotating before said second-named means were moved to neutral position. i

2. In mechanism of the character set forth, the combination of a rotarymember adapted to be rotated in opposite directions, a drive-member, means for driving said rotary member in opposite directions from said drive-member, means for controlling the operation of said first-named means movable to neutral position in which'said rotary member will be disengaged from Said drivemember, means operating automatically to move said second-named means to neutral position, and means having lostmotion connection with said second-named means and operating automatically after the latter occupy neutral position a predetermined length of time, to move the latter to a position in which said rotary member will be operated in adirection opposite to thatin which it was rotating before said secondnamed means were moved to neutral position.

, a 3. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a driveshaft, gear mechanisms interposed between said drive-shaft and rotary --momber for. driving thelatter in opposite directions, clutch mechanism forcontrolling the driv-' ing of said rotary'member through 'said'gear mechanisms, and movable to neutrallposi said clutchmechanism to neutral position, and fluid-pressure-operated ,means fop'eratively connected with said clutch mechanism and operating automaticallyafter' the latter occupy neutral position a predetermined length of time, tomove said clutch mechanism to' a position inwhich said rotary mem-' her will be operated in a directionbpposite to that'in which it was rotating before said clutch mechanism was moved to neutral p0 sition. v I 4. In mechanism of the character set forth, the combination of a rotary member adapt ed tobe rotated in opposite directions, a

drive-shaft, means for rotating said rotary member from said drive-shaft in opposite directions, means controlling the operation of said last-referred to means and movable to neutral position in which said rotary member is disengaged from said drive-shaft, said last-named means including a rotatable shaft, movable in the operation of said last named means to neutral position, means operating automatically to move said sec ond-named means to neutral posit on, and

shaft and operating automatically'after said second-named means occupy neutral position a predetermined length of time, to move 'means operativelyengaging said rotatable said last referred to means to a position in wh1ch said rotary member Will be operated 'a direction opposite to that in which, it was rotating, before said second-named means were moved to neutral position. i

5. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation ofsaid first-named means movable to neutral position in which said rotary member will be disengaged from said drive-shaft, means operating automatically to move said second-named means to neutral position, a fluid-pressure operated member connected with said second-named,

means,'and valve-means controlling the supply of fluid-pressureto said flu d-pressureoperated member, operatively connected with said third-named means for the purpose set forth. s a

6. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means mov- 7.0 7 i means p rating automatically to mov able to neutral position in which said rotary member will be disengaged from said driveshaft, means operating automatically to move said second-named means to neutral position, a fiuid-pressure-operated member connected with said second-named means,

adapted to be rotated in opposite directions,

a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, means releasably engaging said second-named means and operating automatically to move the latter to neutral position, and fluid-pressure-operated means engaging said second-named means and operating automatically after said secondnamed means occupy neutral position a predetermined length of time, to move said lastreferred to means to a position in which said rotary member will be operated in a direction opposite to that in which it was rotatingrbefore said second-named means were moved to neutral position.

I 8. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a rotatable shaft provided with means having releasable connection with said second-named means, for moving the latter to neutral position, means operating automatically to actuate said rotatable shaft,,and fluidpressure-operated means operatively engaging said second named means and operating automatically after said second-named means occupy neutral position a predetermined length of time to move said last-named means to a position in which said rotary member will be operated in a direction opposite to that in which it was rotating before said second-named means were moved to neutral position.

9. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions. means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a shiftable member provided with means operatively engaging said secondnamed means to move the latter to neutral position when said shiftable member is shifted, means operating automatically to shift said shiftable member, and fluidpressure-operated means operatively engaging said second-named means and operating automatically after said second-named means occupy neutral position a predetermined length of time, to move said last-referred-to means to a position in which said rotary nember will be operated in a direction opposite to that in which it was rotating before said second-named means were moved to neutral position.

10. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a shiftable member provided with means for releasably engaging said secondnamed means and operating when shifted to shift said second-named means, means operating automatically to shift said shiftable member and move said second-named means to neutral position, and fluid-pressure-operated means releasably connected with said second-named means operating automatically, after said second-named means occupy neutral position a predetermined length of time, to move said second-named means to a position in which said rotary member will be operated in a direction opposite to that in which it was rotating before said secondnamed means were moved toneutral position.

11. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a rotatable shaft provided with means engaging said second-named means and operating to control the position of the latter, means operating automatically to actuate said rotatable shaft for moving said second named means to neutral position, a second rotatable shaft provided with means operatively engaging said second-named means and movable with the latter when said second-named means are moved to neutral position, and means operatively connected with said second rotatable shaft operating automatically after said second-named means oocu'p'y neutral position a predeterminedlength of time, to actuate said last-referred-to shaft rotating before said second-named means were moved to neutral position. I

-12. In mechanism of the character set forth, the combination of a rotary memberadapted to be rotated in opposite directions, a drive-shaft, means operated by-said driveshaft for driving said rotary member in opposite directions, means for'controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, means operating automatically to move said second-named means to neutral position, a fluid-pressure-operated member releasably connected with said second-named means, and valve means controlling the supply of fluid-pressure to said fluid-pressureoperated member, operatively connected with said third-named means, for the purpose set forth. 7

13. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a rotatable shaft provided with means adapted, when said shaft is rotated, to shift said second-named means to neutral position, and to permit said last-referred-to means to be further shifted in the same direction, means operating automatically to actuate said rotatable shaft, and fluid-pres sure-operated means operating automatically after said second-named means occupy neutral position a predetermined length of time, to shift said last-referred-to means'in the direction in which -they were shifted when moved to neutral position, to a position in which said rotary member will be operated in a direction opposite to that in which it was rotatingbefore said second-named means were moved to neutral position.

let. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaftr for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a rotatable shaft provided with means operating, when said shaft is actuated, to move said second-named means to neutral position and adapted to permit said lastreferredrto means tobe shifted still further in the same direction, means operating automatically to actuate said rotatable shaft for moving said second-named means to neutral position, a'second rotatable shaft provided with means adapted when said last-referred to shaft is actuated, to move said secondreferred to'means, after the latter occupy neutral position a predetermined; length of time, in the direction in Which they were moved to neutral position, to a position in which said rotary member Will be operated in a direction opposite to that in which it was rotating before said second-named means i were moved to neutral position, and fluidpressure means operating automatically to actuate saidsecond rotatable shaft.

15. In mechanism'of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member will be disengaged from said drive shaft, a rotatable shaft provided with means operating when said shaft is actuated. to move saidsecond-named means toneutral position and adapted to permit said lastreferred to means'to be shifted still further in the same direction, means operating automatically to actuate said rotatable shaft for moving said second namedmeans to neutral position, a second rotatable shaft pro vided with means adapted when said lastreferred to shaft is actuated. to movesaid second-referred to means, after the latter occupy neutral position a predetermined length of time, in the direction in which they were moved to neutral position, to a position in which saidrotary member will be op erated in a direction opposite to that in which it was rotating before said second named means were moved to neutral position, fiuid-pressure-operated piston and cylinder mechanism operatively connected with said second-named rotatable shaft, a a

source of fluid pressure, and valve means controlling the flow of fluid pressure to said piston and cylinder mechanism, operating automatically to supply pressure'to said cylinder for actuating the piston therein, to

move said second-named means, after the latter occupy neutral position a predetermined length of time, to a position in which said rotary member will be rotated in the direction opposite to that in which it was ro tating before said second-named means were moved to neutral position.

16. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in oppositedirections, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member Will be disengaged from said drive shaft, means operatively engaging said second-named means and operating automatically to move the latter to neutral position, a movable member provided With shoulders spaced apart, a member on said second-named means adapted to be engaged by said shoulders alternately, for shifting said second-named means to a position in Which said rotary member Will rotate in the direction opposite to that in Which it Was rotating before said second-named means were moved to neutral position, and means operating automatically to move said shoulders alternately into engagement With said. last named member on said second named means.

17. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive'shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in which said rotary member Will be disengaged from said drive shaft, means operatively engaging said second-named means and operating automatically to move the latter to neutral position, a movable member provided with shoulders spaced apart, a member on said secondnamed means adapted to be engaged by said shoulders alternately, for shifting said second-named means to a position in which said rotary member Will rotate in the direction opposite to that in Which it Was rotating before said second-named means Were moved to neutral position, and fluid-pressure-operated means operating automatically to move said shoulders alternately into engagement With said last-named member on said second-named means.

18. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in Which said rotary member Will be disengaged from said drive shaft, means operatively engaging said second-named means and operating automatically to move the latter to neutral position, a pivoted member provided With shoulders spaced apart, a member on said secondnamed means adapted to be engaged by said shoulders alternately, for shifting said second-named means to a position in Which said rotary member Will rotate in the direction opposite to that in which it Was rotating before said second-named means Were moved to neutral position, means operating automatically to move said shoulders alternately into engagement With said lastnamed member on said second-named means, and means operating automatically to dis engage said shoulders from said last-named member.

19. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said drive shaft for driving said rotary member in 0pposite directions, means for controlling the operation of said first-named means movable to neutral position in Which said rotary member Will be disengaged from said drive shaft, means, including a rotatable shaft 0peratively engaging said second-named means and operating automatically, upon rotating said rotatable shaft to move said second-named means to neutral position, fluid-pressure-operated means operatively engaging said second-named means for shifting the latter from neutral position to a position for operating said rotary member, a source of fluid-pressure supply, and valve means for controlling the supply of fluidpressure from said source to'said pressureoperated means, operatively connected with said rotatable shaft, for the purpose set forth.

20. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said drive shaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral. position in which said rotary member will be disengaged from said driveshaft, means, including a rotatable shaft operatively engaging said second-named means and operating automatically, upon rotating said rotatable shaft to move said second-named means to neutral position, fluid-pressure-operated means having lostmotion connection With said second-named means for shifting the latter from neutral position to a position for operating said r0- tary member, a source of fluid pressure supply, and valve means for controlling the supply of fluid pressure from said source to said pressure-operated means, operatively' connected with said rotatable shaft, for the purpose set forth.

21. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means movable to neutral position in Which said rotary member Will be disengaged from said driveshaft means operating automatically to move said second-named means to neutral position, an endless system of conduits, a pump, an operating cylinder and valve mechanism all interposed in said conduits, a piston in said cylinder for actuating said second-named means following the movement of the latter to neutral position, and means for actuating said valve means in timed relation to said third-named means.

22. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controlling the operation of said first-named means and movable to neutral position in which the said rotary member will be disengaged from said drive-shaft, means operating automatically to move said second-named means to neutral position, a cylinder, a piston in said cylinder for actuating said second-named means following the movement of the latter to neutral position, a pump for supplying liquid to said cylinder, conduits connected with said pump and opening into the ends of said cylinder and into the latter intermediate the ends thereof, valve mechanism in said conduits adapted to be rotated in opposite directions,

a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means'for controlling the latter, valve mechanism interposed in said conduits for controlling the How of fluidinto the cylinder, a piston in the cylinder for actuating said second-named means following the movement of thelatter to neutral position, and means for actuating said valve means in timed relation to said third-named means.

24. In mechanism of the character set forth, the combination of a rotary member adapted to be rotated in opposite directions, a drive-shaft, means operated by said driveshaft for driving said rotary member in opposite directions, means for controllingthe operation of said first-named means and movable to neutral position in which the said rotary member will be disengaged from said drive-shaft, means I operating automatically to move said second-named means to neutral position, a cylinder, a pump, a system of conduits communicating with said pump and with the opposite ends of said cylinder and intermediate the ends of the latter, valve mechanism interposed in said conduits for controlling the flow of fluid into the cylinder, and a piston in the cylinder for actuating said second-named means following the movement of the latter to neutral position. W BRITTON LANE. In "presence of LOUISE HEIsnAR, F. A. FLORELL.

Copies of this patent may be obtained for five cents each, by' addressing the Commissioner of Patents,

Washington, .D. G. I 

